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APN612S - AIR POLLUTION AND NOISE - 1ST OPP - NOV 2022 |
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(
n Am I BI A un IVE RS ITV
OF SCIEnCE Ano TECHnOLOGY
FACULTYOF HEALTHAND APPLIEDSCIENCES
DEPARTMENTOF HEALTHSCIENCES
QUALIFICATION: BACHELOR OF ENVIRONMENTAL HEALTH SCIENCES
QUALIFICATIONCODE: 08BOHS
LEVEL: 6
COURSECODE: APN 612S
COURSENAME: AIR POLLUTION AND NOISE
SESSION:NOVEMBER 2022
DURATION: 3 HOURS
PAPER:THEORY
MARKS: 100
FIRSTOPPORTUNITYEXAMINATION QUESTION PAPER
EXAMINER(S) PROFESSOROMOTAYO AWOFOLU
MODERATOR: Ms MOUYELELE HAUFIKU
INSTRUCTIONS
1. Answer ALL the questions.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLEMATERIALS:
1.
Pen
2.
Ruler
3.
Non-Programmable Calculator
THIS QUESTION PAPERCONSISTSOF 3 PAGES(Including this front page)
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APN 612S -AIR POLLUTION AND NOISE: FIRSTOPPORTUNITY EXAM QUESTION PAPER- NOV 2022
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SECTION A [25 MARKS]
QUESTION 1 [25 MARKS]
1.1 The adverse human health effects caused by Particulate Matters (PMs) are linked to
their sizes. State the characteristics that defines coarse particles.
[4]
1.2 Environmental Health Sciences students are exposed to noise at 95dB from nearby
construction work during Air Pollution and Noise lecture. Provide any five (5) effects
of the exposure on the students.
[6]
1.3 Describe, in stepwise manner, the process you will take in investigating noise pollution
complaint by a resident.
[5]
1.4 Residents near a local entertainment outlet in Windhoek were found to be exposed
to sound pressure level (SPL)of 50 µPa. If the hearing threshold is 20 µPa. Determine
the SPL(in decibel).
[4]
1.5 Inhabitants of an area along Bl road in Windhoek complained of exposure to noise
from the road. Explain control measures you will present to the municipal manager.
[6]
SECTION B [25 MARKS]
QUESTION 2 [25 Marks]
2.1 Part 6, sub-section 3 ofthe Tobacco Products Control Act No.1 of 2010 allow the
Minister to prohibit the smoking of any tobacco product in public places.
(i). State any four (4) of such places giving an example each case.
[6]
(ii). Provide the reasons for the prohibition.
[4]
2.2 State any six (6) situations in which municipal bye-laws allow the broadcast of noise.
[9]
2.3 Briefly explain the following legislative terms giving an example in each case:
(i). Statutory Law
[2]
(ii). Regulations
[2]
(iii). Air Quality Standards
[2]
SECTION C [SOMARKS]
QUESTION 3 [18 MARKS]
3.1 Clarify the term "organoleptic method" and state its advantage over the chemical method. [5]
3.2 Describe the characteristics used to express odour by sensory technique.
[4]
3.3 Explain the main types of air pollutants in the environment.
[4]
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APN 612S -AIR POLLUTION AND NOISE: FIRST OPPORTUNITY EXAM QUESTION PAPER- NOV 2022
3.4 Outline the desirable characteristics expected of all air sampling devices.
[S]
QUESTION 4 [32 MARKS]
4.1 Enumerate possible effects of climate change in Namibia
[6]
4.2 Define visibility and briefly explain the factors that can influence impaired visibility.
[6]
4.3 Explain the concept of the Natural Greenhouse Effect and support your answer with
an illustration.
[8]
4.4 Illustrate how industries or businesses can significant contribution to air pollution.
[12]
TOTAL:100 MARKS
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